Patch "tg3: Enable PHY reset in MTU change path for 5720" has been added to the 4.4-stable tree

Patch "tg3: Enable PHY reset in MTU change path for 5720" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    tg3: Enable PHY reset in MTU change path for 5720

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     tg3-enable-phy-reset-in-mtu-change-path-for-5720.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Wed Feb 28 16:19:30 CET 2018
From: Siva Reddy Kallam <siva.kallam@broadcom.com>
Date: Fri, 22 Dec 2017 16:05:29 +0530
Subject: tg3: Enable PHY reset in MTU change path for 5720

From: Siva Reddy Kallam <siva.kallam@broadcom.com>


[ Upstream commit e60ee41aaf898584205a6af5c996860d0fe6a836 ]

A customer noticed RX path hang when MTU is changed on the fly while
running heavy traffic with NCSI enabled for 5717 and 5719. Since 5720
belongs to same ASIC family, we observed same issue and same fix
could solve this problem for 5720.

Signed-off-by: Siva Reddy Kallam <siva.kallam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/broadcom/tg3.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -14240,7 +14240,8 @@ static int tg3_change_mtu(struct net_dev
 	 */
 	if (tg3_asic_rev(tp) == ASIC_REV_57766 ||
 	    tg3_asic_rev(tp) == ASIC_REV_5717 ||
-	    tg3_asic_rev(tp) == ASIC_REV_5719)
+	    tg3_asic_rev(tp) == ASIC_REV_5719 ||
+	    tg3_asic_rev(tp) == ASIC_REV_5720)
 		reset_phy = true;
 
 	err = tg3_restart_hw(tp, reset_phy);


Patches currently in stable-queue which might be from siva.kallam@broadcom.com are

queue-4.4/tg3-enable-phy-reset-in-mtu-change-path-for-5720.patch
queue-4.4/tg3-add-workaround-to-restrict-5762-mrrs-to-2048.patch